83398855 has 16 divisors (see below), whose sum is σ = 106445664. Its totient is φ = 62510080.

The previous prime is 83398807. The next prime is 83398891. The reversal of 83398855 is 55889338.

It is not a de Polignac number, because 83398855 - 2¹⁹ = 82874567 is a prime.

It is a super-2 number, since 2×83398855² = 13910738030622050, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 83398799 and 83398808.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17700 + ... + 21910.

It is an arithmetic number, because the mean of its divisors is an integer number (6652854).

Almost surely, 2^83398855 is an apocalyptic number.

83398855 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

83398855 is a deficient number, since it is larger than the sum of its proper divisors (23046809).

83398855 is a wasteful number, since it uses less digits than its factorization.

83398855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4466.

The product of its digits is 1036800, while the sum is 49.

The square root of 83398855 is about 9132.2973560873. The cubic root of 83398855 is about 436.9046792744.

The spelling of 83398855 in words is "eighty-three million, three hundred ninety-eight thousand, eight hundred fifty-five".